A classic whodunit that follows a string of murders at a shared university boarding house, packed with film references and inside jokes.

As the victims mount one by one, the atmosphere inside the house begins to collapse.

A full-length mystery in which Nikaido Ranko unravels a case of threatened murder and two tragedies surrounding an old family house.

In a snowbound old mansion, the mysteries of the locked room and the murderer without footprints overlap.

A detective mystery in which three campus friends investigate a fall death that occurs on Christmas Eve.

Behind the comedic detective work, the relationship among the three gradually takes shape.